Anyone would think I’m obsessed with finding the blackest practical commercial black paint...I’m not, but I do like to see the latest tech on this, having tried Black 2 and the ‘blackier’ Black 3. Now there’s a new kid on the block; Musou Black, from Japan.
https://nerdist.com/article/musou-blackest-paint-japan/
If you’ve ever built a solar Frankenscope, then you’ll understand the interest in removing any and all spurious reflections of stray light. This is something I battled with in early trials with my 150mm mod and others. Baffles and black paint solved the problems, but I was hooked on finding a commercial ‘better black’.
I’d be interested to know if anyone has tried this already. BTW it is expensive at around £45/100ml and availability might be tight at the moment.
Stu.
Blackest Black?
- Carbon60
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Blackest Black?
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
- marktownley
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Re: Blackest Black?
Interesting Stu! I should explore my scopes for 'shiny surfaces' while we are in winter and not really able to do much observing. Winter tinkering
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
Re: Blackest Black?
Thank you for the pointer!
I have used Black 2.0 and 3.0 as well as the discontinued Berger black (https://www.astrogeraete.de/Antireflexfarbe.html) for my Coronagraph. I will try out the Musou Black - the blacker the better
I have also created my own nano-tubes in the past (sort of): in order to get my Lyot stop perfectly black, I "sooted" it, i.e. I held it over a candle trying to create lots of smoke/soot, which is very black. This is only suitable for small parts which don't burn ... and then there is the problem of particles coming loose, even though I did not have any real problems with that.
I have used Black 2.0 and 3.0 as well as the discontinued Berger black (https://www.astrogeraete.de/Antireflexfarbe.html) for my Coronagraph. I will try out the Musou Black - the blacker the better
I have also created my own nano-tubes in the past (sort of): in order to get my Lyot stop perfectly black, I "sooted" it, i.e. I held it over a candle trying to create lots of smoke/soot, which is very black. This is only suitable for small parts which don't burn ... and then there is the problem of particles coming loose, even though I did not have any real problems with that.